package main

import "fmt"

func main() {
	defer func() {
		if r := recover(); r != nil {
			fmt.Println("除数不能为0")
		}
	}()
	a := 5
	b := 10
	c := 100
	d := 3
	e := 0
	fmt.Println(a + b)
	fmt.Println(a - b)
	fmt.Println(a * b)
	fmt.Println(c / 1)
	fmt.Println(1 % d)
	fmt.Println(1 / e)
}
